Electromagnetically induced transparency from a single atom in free space |
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Authors: | Slodi?ka L Hétet G Gerber S Hennrich M Blatt R |
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Institution: | Institute for Experimental Physics, University of Innsbruck, A-6020 Innsbruck, Austria. |
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Abstract: | In this Letter, we report an absorption spectroscopy experiment and the observation of electromagnetically induced transparency from a single trapped atom. We focus a weak and narrow band Gaussian light beam onto an optically cooled 138Ba+ ion using a high numerical aperture lens. Extinction of this beam is observed with measured values of up to 1.35%. We demonstrate electromagnetically induced transparency of the ion by tuning a strong control beam over a two-photon resonance in a three-level Λ-type system. The probe beam extinction is inhibited by more than 75% due to population trapping. |
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